Temperature regulator for incubators



` 1,634,401 July 51927 J, I .DAvls TEMPERATURE REGULATOR FOR INCUBATORS Filed Auz. 5. 1926 z l ,ag

l l -J f Lz/@avis Patented July 5, 1927. i

UNITE@ Slt-lllhifi JOSEPH L. DAVIS, GTE* ABUGDGN, LLINGS.

.Application tiled August 5, 192.

This invention relates to tenurierature regg'w ulators tor incubatore and more particularly to a device ot' this character lor use with that type of incubator where the temperature ot the incubator is controlled by a valve regulating the flow oli heated water through the incubator.

lncubators o'l this type are what are known as mammoth incubator-s and are adapted for the simultaneous production ot a great number of chicks. The incubator is of considerable size and the ordinary regulator employed is both crude in its adjustment and dillicult ot access. Accordingly, an important object of the present invention is to provide a device oit this character which may be conveniently located, which permits a very delicate adjustment et the temperature and which will not in any way ,interfere with the normal operation or" the incubator.

A further obj ect ot the invention is to provide a device ot this character which may be attached to the present incubator constructions without in any manner alteringl the same.

These and other objects l attain by the construction shown in the accompanying drawings, wherein tor the purpose ot illustration is shown a preferred embodiment ot my invention and wherein v Figure 1 is a side elevation partially broken away of an incubator showing` a regulator constructed in accordance with my invention applied thereto;

Figure 2 is an enlarged vertical sectional view on the line 2-2 of Figure 1.

Referring now more particularly to the drawings, the numeral generally desifgnates a mammoth incubator interiorly ot which are arranged heating coils 11. EX- teriorly ot the incubator is arranged a heater 12 by means of which water within a tank 13 is kept heated and the upper and lower ends of this tank are connected by conduits ll and 15 with the terminals ot' the coils 11. The temperature regulation is provided by installing within the incubator a thermostat 16 through which oscillation of the pivoted lever' 17 supported trom the top oil the incubator, as at 18, is obtained in the usual manner. Arranged within the conduit 14 which communicates with the inlet of the oil 11 is a valve 18a, the bonnet of which has secured thereto a vertically extending tube 197 the upper end oli which projects ahw-'c the highest peint oil the water elitair Serial No. 127,386.

latina' system and is in direct communication with the valve seat. The valve element 20 ot the valve has its stem 2l connected with one end oit the leven as at 22, so that when this end ot the lever is depressed, the valve is seated and circulation through the coil cut oil?.

The above structure all l'orms a normal part of the incubator construction and is not a part ot my invention except in combination with the 'features hereinafter described. ln accordance with my invention, I provide a sleeve 22 adapted to exteriorly iit the upper end ol the tube 19 and be secured there` to. ln the presentinstance, set-screws 23 are illustrated as the securing;` means. This sleeve has diametrically opposed outstanding' ears 2liiiroin which extend vertically disposed rods 25, the upper ends ot which are tin-ceded. 'llo the valve setem 2l, I secure a spring; seat 26 against which abuts one end oli a spring` 2i'. fl. cross bar 28 is provided having' an opening for the passage of the valve stein 21 and a seat 29 for the upper end of the spring. |The opposite ends of this cross bar have openings 30 Yfor the passage oil" the threaded upper ends of the rods 25 and nuts 3l are employed to force the bar downwardly toward 'the tube 19 and the seat 32 ot the valve. ln the present instance, the ends ot the bar are shown as horizontally slotted, as at 33, and the nuts 31 as being disposed within the slots, so that the position et the bar is positively determined and any misplacement et the bar by an accidental enpjagzj'en'ient therewith prevented. lt will be obvious that by adjusting' the nuts 31., the pressure which the spring;- 27 exerts to seat th valve 20 may be very closely regulated and accordingly the temperature oit the in terior ot the incubator closely regulated.

Since the structure hereinbefore set forth is obviously capable ot' a certain range of change and modilication without materially departingl from the spirit ot the invention, l do not limit myself to such specific structure except as hereinafter claimed.

l. The combination with an incubator includina' a heating` coil and a heating tank supplying1 the coil, a valve controlling circulation through the tank and coil and a thcrmostatically controlled lever for shittinsg` the valvey a men'iber embodying rods paralleling the stem the valve secured in liXed relation to the valve casing; a spi-ingr llll VlG

secured to the valve stein below tlieupper ends of the rods, the upper ends of said rods being threaded, a cross bar having an opening for the passage oiL the valve stern at its center and openings 'for thepassage of the rods at its ends, a spring extending between the valve seat andv cross bar and surrounding the valve stein and nuts upon the upper ends of the rods ipor shitting the cross'bar toward said spring seat.

2. The combination with an incubator in cluding a heating coil and aheating tank supplying the coil, a valve controlling circulation through the tank and coil and a th-erinostatically controlled lever for shitting the valve, a ineinber en'il'iodyiiig rods paralleling the stein of the valve secured in lined relation to the valve casing, a spring seat secured to the vvalve stein below the upper ends of the rods, the upper ends of said rods being threaded, a cross bar having an openM ing for the passage ot the valve stein at .its center and openings for the passage of the rods at its ends, al spring extending between the valve seat and cross bar and surrounding the valve stein and nuts upon the upper ends of the rods Ylor shitting the cross bar toward said spring seat, the rod engaging ends or' said cross bar having horizontal slot-s within which said nuts are located.

The' combination with an incubator including a heating coil and a heating tank supplying the coil, a valve controlling circulation through the tank and coil and a therinostatically controlled lever for shifting the valve, a ineinber embodying rods paralleling the stem or the valve secured in fixed relation to the valve casing, a spring seat securedy to the valve stein below the upper ends of the rods, the upper ends of saidA rods yner-14,4101

beingthreaded, a cross bar having an opening 'for the passage ol the valvesteni at itsl center and openings for the passage of the rods at its ends, a spring extending between y or the rods For shitting the cross bar toward said spring` seat, the valve casing having a tubular extension through which the Valve stein is directed, said ineinber including a sleeve fitting the upper end of the tubular extension of the casing andA secured thereto@v lfhe combination withan incubator including a heating coil and a heating tank supplying the coil, a valve controlling'circui on through the tank and coil and a therinostatically 'controlled lever for shifting the valve, a ineinber embodying rods par- ,leling the stein oiC the` valve secured in ed relation to the valve casing, a spring at secured to the valve stein below the upper ends o'l" the rods, the upper ends of saidy rods being threaded, a cross bar having anv ening for the passage of the valve stein at C its center and ejienings for the passage of the lpfdc uli Jkinl Luka th valve seat and cross bar and surroundin the valve stein andv nuts upon the upper ends -ol the roes lorshifting the cross bai' toward said r-fpring seat, kthe rod engaging ends ot sind cross bar having horizontal slots casing having a tubular extension through its ends, a spring extending between p* which the valve stein is directed,` said inern- JOSEPH L.r DAVIS 

